feat(io,command): quests command, QuestText, per-turn quest tick

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Semesterprojekt/src/test/java/thb/jeanluc/adventure/command/impl/QuestsCommandTest.java

@@ -0,0 +1,34 @@
+package thb.jeanluc.adventure.command.impl;
+
+import org.junit.jupiter.api.Test;
+import thb.jeanluc.adventure.game.GameContext;
+import thb.jeanluc.adventure.game.QuestEngine;
+import thb.jeanluc.adventure.io.TestIO;
+import thb.jeanluc.adventure.model.Condition;
+import thb.jeanluc.adventure.model.Player;
+import thb.jeanluc.adventure.model.Quest;
+import thb.jeanluc.adventure.model.QuestStage;
+import thb.jeanluc.adventure.model.Room;
+import thb.jeanluc.adventure.model.World;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class QuestsCommandTest {
+    @Test
+    void showsActiveObjective() {
+        Quest q = new Quest("q", "My Quest", true,
+                List.of(new QuestStage("Do the thing",
+                        List.of(new Condition(Condition.Type.FLAG, "x")), List.of())), List.of());
+        World w = new World(Map.of(), Map.of(), Map.of(), "t", "w", Map.of("q", q));
+        GameContext ctx = new GameContext(w, new Player(new Room("k", "K", "d"), 0), new TestIO());
+        QuestEngine.tick(ctx); // auto-start
+
+        new QuestsCommand().execute(ctx, List.of());
+
+        String out = ((TestIO) ctx.getIo()).allOutput();
+        assertThat(out).contains("My Quest").contains("Do the thing");
+    }
+}